-------- Original Message -------- Subject: Raster to Vector Date: Wed, 19 Feb 2003 07:35:36 -0800 From: [log in to unmask] To: [log in to unmask] ------------------ A professor at my institution wants to create an historical GIS showing the development of the transportation network in our region over time. The obvious way to do this is to digitize the road networks shown on old maps using a digitizing table, but I am wondering if it might be possible to accomplish this task using a program like R2V. Has anyone used a raster to vector conversion program for a project like this and obtained satisfactory results? David Allen Map Librarian Stony Brook University